Went out with a group from the camera club when Roses were in their prime in late June of this year. Shot some and a few other flowers. As far as I am concerned, macro work is about the hardest kind of photography I have yet to try. It's all work and very difficult to see properly through those extenders!
People underestimate how hard macro photography is! The slightest movement of the camera can be half the body length of a tiny creature or flower!
For that reason, especially since you're working with inanimate subjects like flowers, I recommend not looking through your viewfinder at all, and using Live View and a tripod instead. Really helps in composing your shots at 1x, and then (once composed) in really nailing your focus with the key areas of the subject blown-up 10x closer on your screen for careful scrutiny ...
That said, I think all of your images turned out delightful